Coolidge Dam Warm Spring
Coolidge Dam Warm Spring sits on the San Carlos Reservation in Gila County, about ten miles from Peridot. The water is body temperature, soaking warm. Tribal land comes with its own rules, and the record lists access as unknown, so the warm water is only half the story. No chemistry has been logged, though there is a photo.
The nearest road, unnamed, lies a few hundred feet off, so the approach counts as a short walk. San Carlos Reservation land. The spring sits at a modest elevation in dry country where the annual average lands near seventy and a foot of rain falls in a typical year. Snow is rare. Kellner Group Campground shows as the nearest camp, around twenty one miles distant.
Winter months, December through February, are on file as the best time. The walk in is short. Access is listed unknown. The ground is reservation land, so permission from the tribe comes first. Kellner Group is a fair drive for camping. The water is warm enough to enjoy and nowhere near hot enough to worry about.
USGS hasn't flown a detailed laser scan here yet, so this view comes from aerial photos and older elevation data.
The orange dot marks the spring, in a frame about three quarters of a mile wide.
- Setting
- Canyon floor
- Steep ground climbs away on both sides of the spring.
- Highest ground nearby
- 763 ft above the spring
- Within a quarter mile, to the east
A slice through the ground from northwest to southeast, about 0.6 miles end to end.
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
That's about 1½ times the US average of 65. It's higher than at 58% of the springs on this site.
Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.
See every spring on the geothermal heat map →
Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.
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Overview Kellner Group Site is nestled at the base of the beautiful Pinal Mountains south of Globe, Arizona. Several picnic areas are separeted from the larger group area creating a semi-secluded setting. This site's interesting rock walls and steps were built by the Civilian Conservation Corps. It sits in the riparian area of Kellner Canyon, which frequently has a small stream running through it following winter runoff.Recreation Kellner Group Site recreation opportunities include hiking,...
Coolidge Dam Warm Spring is road-accessible, so you can bring more gear. Bring sun protection for exposed soaking.
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